Originally Posted By: grelber
In Lion Chess.app came bundled.
Version 2.4.5, 8.3MB; created in June 2011, modified in Feb 2012.

If it's anything like Snow Leopard, that's not gonna cut it.

The 2-D view is useless... we have to play 3-D. No list of moves, no opening book, no collections (or a library of past tournaments), can't step back-AND-forth through a saved game, can't take back ONE move when playing against computer (must undo both moves). It's just a toy. Follow the link for Sigma Chess to see where a program should start feature-wise.

There are actually a few halfway decent games on iOS. What's needed is a package that covers both MacOS and iOS that has those useful features (and more) which also shares a common database of saved games.